I could but for $1800/year I could also build at least 8 redundant NAS boxes with 2TB storage and stick them at my friend's houses. I could also just pay $180/year for S3. Your offering is VERY expensive though I am sure quality is top notch.
FWIW, the HN new-customer discount brings that down to $1200/year.
Probably ... 2x the price of S3, given the cost of data transfer which, for us, is zero.
It may not be for you, but some folks find phone support, 7d+4w snapshots, straight-up, native unix interoperability and 2 free physical delivery events per year to be compelling.